Diaspora and Permutation City put totally new questions in my head.
If consciousness is only a series of states in your brain, does it matter what the order of running that sequence is? In Permutation City there is an experiment where brain states are played back backwards or in a random order, but to the person perceiving it, it seems like just business as usual.
I always assumed that after my brain is destroyed there would be just nothingness. But maybe if the "next state" will again exist some time in the future (or past?) from my perspective it will still be a totally continuous experience. Death might seem like just a bad dream.
He plays a lot with this stuff. In Diaspora consciousness is just a piece of software. Since this software can be run at a much higher speed than wetware can, each moment of real time seems much longer to the uploaded. But when they want to, for example when waiting for an interstellar trip to complete, they can "skip forward" and let the brain emulator run them at a much slower pace to make the trips more bareable.
I thought running a consciousness backwards or in random order would be as far as he goes, but in Diaspora they even go a step further, having every state be a completely separate structure in a completely separate universe. The book assumes that to the participants even that would seem like a continuous experience.
It really makes me question what I really am, how malleable is this "me"?